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Dow Jones futures rose Tuesday after President Trump's comments on Mexican and Canadian tariffs. Nvidia and Tesla extended their gains.

The resulting positive wealth effect is undoubtedly boosting consumer spending, especially of retiring baby boomers, who are enjoying the windfalls in the value of their stock portfolios and homes.

This other indicator is based on comparing the stock market's January and December low. It supposedly is a bad sign if January's low is lower, which is the case this year: On Jan. 10 the stock market ...